Neurological assessment of the deficits in Parkinson's disease before and after stereotactic surgery.
D000368:Aged; D003452:Cryosurgery; D006801:Humans; D008875:Middle Aged; D010300:Parkinson Disease / Q000601:surgery*; D011446:Prospective Studies; D013238:Stereotaxic Techniques; D013788:Thalamus / Q000601:surgery*